1#include "commandline.h"
  2
  3#ifdef USE_CLI_DEBUGGER
  4#include "debugger/cli-debugger.h"
  5#endif
  6
  7#ifdef USE_GDB_STUB
  8#include "debugger/gdb-stub.h"
  9#endif
 10
 11#include <fcntl.h>
 12#include <getopt.h>
 13
 14static const char* _defaultFilename = "test.rom";
 15
 16static const struct option _options[] = {
 17	{ "bios", 1, 0, 'b' },
 18#ifdef USE_CLI_DEBUGGER
 19	{ "debug", 1, 0, 'd' },
 20#endif
 21#ifdef USE_GDB_STUB
 22	{ "gdb", 1, 0, 'g' },
 23#endif
 24	{ 0, 0, 0, 0 }
 25};
 26
 27int parseCommandArgs(struct StartupOptions* opts, int argc, char* const* argv, const char* extraOptions) {
 28	memset(opts, 0, sizeof(*opts));
 29	opts->fd = -1;
 30	opts->biosFd = -1;
 31	opts->width = 240;
 32	opts->height = 160;
 33	opts->fullscreen = 0;
 34
 35	int multiplier = 1;
 36	int ch;
 37	char options[64] =
 38		"b:"
 39#ifdef USE_CLI_DEBUGGER
 40		"d"
 41#endif
 42#ifdef USE_GDB_STUB
 43		"g"
 44#endif
 45	;
 46	if (extraOptions) {
 47		strncat(options, extraOptions, sizeof(options) - strlen(options) - 1);
 48	}
 49	while ((ch = getopt_long(argc, argv, options, _options, 0)) != -1) {
 50		switch (ch) {
 51		case 'b':
 52			opts->biosFd = open(optarg, O_RDONLY);
 53			break;
 54#ifdef USE_CLI_DEBUGGER
 55		case 'd':
 56			if (opts->debuggerType != DEBUGGER_NONE) {
 57				return 0;
 58			}
 59			opts->debuggerType = DEBUGGER_CLI;
 60			break;
 61#endif
 62		case 'f':
 63			opts->fullscreen = 1;
 64			break;
 65#ifdef USE_GDB_STUB
 66		case 'g':
 67			if (opts->debuggerType != DEBUGGER_NONE) {
 68				return 0;
 69			}
 70			opts->debuggerType = DEBUGGER_GDB;
 71			break;
 72#endif
 73		case '2':
 74			if (multiplier != 1) {
 75				return 0;
 76			}
 77			multiplier = 2;
 78			break;
 79		case '3':
 80			if (multiplier != 1) {
 81				return 0;
 82			}
 83			multiplier = 3;
 84			break;
 85		case '4':
 86			if (multiplier != 1) {
 87				return 0;
 88			}
 89			multiplier = 4;
 90			break;
 91		default:
 92			return 0;
 93		}
 94	}
 95	argc -= optind;
 96	argv += optind;
 97	if (argc == 1) {
 98		opts->fname = argv[0];
 99	} else if (argc == 0) {
100		opts->fname = _defaultFilename;
101	} else {
102		return 0;
103	}
104	opts->fd = open(opts->fname, O_RDONLY);
105	opts->width *= multiplier;
106	opts->height *= multiplier;
107	return 1;
108}
109
110struct ARMDebugger* createDebugger(struct StartupOptions* opts) {
111	union DebugUnion {
112		struct ARMDebugger d;
113#ifdef USE_CLI_DEBUGGER
114		struct CLIDebugger cli;
115#endif
116#ifdef USE_GDB_STUB
117		struct GDBStub gdb;
118#endif
119	};
120
121	union DebugUnion* debugger = malloc(sizeof(union DebugUnion));
122
123	switch (opts->debuggerType) {
124#ifdef USE_CLI_DEBUGGER
125	case DEBUGGER_CLI:
126		CLIDebuggerCreate(&debugger->cli);
127		break;
128#endif
129#ifdef USE_GDB_STUB
130	case DEBUGGER_GDB:
131		GDBStubCreate(&debugger->gdb);
132		GDBStubListen(&debugger->gdb, 2345, 0);
133		break;
134#endif
135	case DEBUGGER_NONE:
136	case DEBUGGER_MAX:
137		free(debugger);
138		return 0;
139		break;
140	}
141
142	return &debugger->d;
143}
144
145void usage(const char* arg0, const char* extraOptions) {
146	printf("usage: %s [option ...] file\n", arg0);
147	puts("\nGeneric options:");
148	puts("  -b, --bios FILE  GBA BIOS file to use");
149#ifdef USE_CLI_DEBUGGER
150	puts("  -d, --debug      Use command-line debugger");
151#endif
152#ifdef USE_GDB_STUB
153	puts("  -g, --gdb        Start GDB session (default port 2345)");
154#endif
155	if (extraOptions) {
156		puts(extraOptions);
157	}
158}